We know from the inscription on the lid of the coffin of Men-kau-Ra, king of the IVth, the Memphite Dynasty, (_circa_ 3633-3600 B.C.,) and builder of the Third Pyramid at Gizeh; that some of the most elevated conceptions of the _Per-em-hru_, i.e., the so-called, Book of the Dead, were at that time in existence as accepted facts. The dead one at this early period became an Osiris, living eternally. We have every reason to think, that the use of the models of the scarabæus as the symbol of the resurrection or new-birth, and the future eternal life of the triumphant or justified dead, existed as an accepted dogma, before the earliest historical knowledge we have thus far been able to acquire of the Ancient Egyptians. It most probably ante-dated the epoch of Mena, the first historical Egyptian king. How long before his period it existed, in the present condition of our knowledge of the ancient history and thought of Egypt, it is impossible to surmise. Of the aborigines of the land of Egypt we do not know nor are we very likely to know, anything. Of the race known to us as the Egyptian we can now assert with much certainty, that it was a Caucasian people, and likely came from an original home in Asia. When the invader arrived in the valley of the Nile, he appears to have been highly civilized and to have had an elevated form of religious belief. The oldest stelæ known, one of which is now in the Ashmolean Museum at Oxford, England, and the other in the Museum at Gizeh, Egypt; were made for the tomb of Shera, who is called on them, "a prophet" and "a royal relative." He was a priest of the period of Sent, the fifth king of the IInd Dynasty, who was living about 4000 B.C. The stele is shown by Lepsius in his _Auswahl_, Plate 9, and is the earliest example of a hieroglyphic inscription known. These stelæ are in the form of a false door.